Grade Upto college level Engineering Entrance Exams
A cyclist turns around a curve at 15 miles per hour. If he turns at double the speed, the tendency of overturn is
(a) doubled
(b) quadrupled
(c) halved
(d) unchanged
sumit kumar
12 Years agoGrade Upto college level
2 Answers
Radhey joshi
7 Years ago
Speed=15miles/hr . Eqs-1.... ..Initially
In vertical circular motion
Tendency to overturn depends on centipital force
Mv^2/r. eqs-2
Here velocity is doubled means now is 30miles/hr
We get the value four times
Correct ans-(b)
Dividing eqs 2 and 1
Radhey joshi
7 Years ago
F directly proportional to v^2
From F=MV^2/r
And F is tendency to overturn in a circular motion
Therefore on doubling velocity
Tendency to overturn becomes quadrupled
And(b)
Other Related Questions on engineering entrance exams